Thanks everyone. I think I'll try re-pressing in advance. It might not be as bad as I think, as the blocks can be flipped 180 degrees if necessary. But also, I won't worry if I end up with seam allowances going in the same direction. (even though the thought grates on me!) I also just finished a small quilt where my final seams I pressed open. That is not easy. Especially when you forget to turn off the steam. Ouch!